This is a GL1800 Compu-Fire alternator. This alternator puts out 150 amps! This has a temperature compensated voltage regulator and puts out 80 amps at idle. The stock alternator on the 2001-2005 GL1800's put out a maximum of 78 amps and the alternator on the 2006-2017 models put out 110 amps. It is great for bikes that have a lot of additional electrical equipment. It will fit all Goldwing GL1800s and F6B's from 2001-2017. 2112-0834